Description
The Atlas 831 is a 6-piece pack of Code 100 curved Snap-Track at 15′′ radius — the tight-radius curve used for compact layouts (table-top, 4×8 starter, and inner loops of double-track plans).
Geometry: Each section is 30° of arc; twelve sections (two 6-packs) complete a full 360° circle. The 15′′ radius is the tightest Atlas Code 100 curve and best suited to short equipment — 40′ freight cars, 4-wheel switchers, and short passenger.
- Scale: HO
- Code: 100 (0.100′′ rail height)
- Radius: 15′′ / 381 mm
- Arc: 30° per section — 12 = full circle
- Count: 6 pieces
- Best for: Tight inner loops, 4×8 layouts, switching plans
- Family: 15′′R (#831), 18′′R (#833), 22′′R (#836)